Electrical circuit breaker



FIG. 1 is a front, top, and right side perspective view of an electrical circuit breaker showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a left side elevation view thereof.

The broken lines in the drawing views are included for the purpose of illustrating portions of the electrical circuit breaker only, and form no part of the claimed design. 

CLAIM The ornamental design for an electrical circuit breaker, as shown and described. 